======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '184'
                                          'artist'  'The Brian Setzer Orchestra'
                                     'text_people'  ''
                                         'release'  'VaVoom'
                                           'title'  'Pennsylvania 6-5000'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'rock', 'rockabilly', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '92.942'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'VaVoom'
'TBPM' (BPM (beats per minute))                     '92.942'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Pennsylvania 6-5000'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Brian Setzer Orchestra'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.52 dB'
'TXXX:replaygain_track_peak'                        '0.387679'

========================== row from database ==========================
                                              'id'  673035
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Brian Setzer Orchestra/MBZ;#The Brian Setzer Orchestra;#VaVoom;#01;#Pennsylvania 6-5000.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  184
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  4425349
                                           'mtime'  1620525124
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#The Orchestra;#VaVoom;#01;#Pennsylvania rock rockabilly or psychobilly
                                      'tag_artist'  The Brian Setzer Orchestra
                                     'tag_release'  VaVoom
                                       'tag_title'  Pennsylvania 6-5000
                                             'bpm'  92.942
                                    'search_title'  '5000':3 '6':2 '65000':4 'pennsylvania':1
                                   'search_artist'  'brian':2 'orchestra':4 'setzer':3 'the':1
                                  'search_release'  'va':2 'vavoom':1 'voom':3
                                     'search_rest'  '01':11,15,26,29 'country':4 'exotica':2 'jazz':1 'mbz':5,7 'oldies':3 'or':19 'orchestra':9,13,21,23 'pennsylvania':12,16,27,30 'psychobilly':20 'rock':17 'rockabilly':18 'the':6,8 'va':22,24 'vavoom':10,14 'voom':25,28
                                    'search_combo'  '01':22,26,37,40 '5000':3A '6':2A '65000':4A 'brian':6B 'country':15 'exotica':13 'jazz':12 'mbz':16,18 'oldies':14 'or':30 'orchestra':8B,20,24,32,34 'pennsylvania':1A,23,27,38,41 'psychobilly':31 'rock':28 'rockabilly':29 'setzer':7B 'the':5B,17,19 'va':10C,33,35 'vavoom':9C,21,25 'voom':11C,36,39
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525123.6532433  (2021-05-09 03:52:03)
                             'size'  4425349